You can check it on several sites to find out what coins are good such as the
icodrops.com site,
coinmarketcap.com and the
cryptorank.io site.
Of course the site as our material to consider for yourself before buying.
Very good advice, but so far I have only used two sites to search about all coins and then I considered carefully by myself, coinmarketcap.com and coinecko are two sites that I use very often for this because they are also very popular enough for me.